US74668A - James conner - Google Patents

Description

JAMES DONNER, OF RICHMOND, INDI'NA.

Letters Patent No. 74,668, dated-lf'ebrztarg/ 1S, 1868.

IMPROVEMENT 1N Woon-:sentire Maestrias.

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TO -ALL WHOM I'l MAY CONCERN:

Be it known that I, JAMES CONNER, in the city of Richmond, county 'of Wayne, and State of Indiana, have invented a new and useful Improvement in Wood-Dendng Machines; and I do hereby declare that the following is a full and exact description of the same, reference'being had'to the accompanying drawings, malring a. part of this speciication, in which v i Figure 1 is a perspective view,

Figure 2 a-longitudinal elevation,

Figure Spreprescnts a section of the flexible chain, and

Figure 4 a view of the former after the process of bonding, with the timber attached.

The same letters in the diiferent figures relate to corresponding parts ofthe machine To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

represents the table or bench for supporting the devices. B represents a piece of timber inserted and ready for the operation of bending. A compound chain, composed 'of sections a a a a, riveted together and secured to bench A, at its end a', by screi'vs or in any suitable manner, serves to support the timber laterally during the process of bending, and also to protect its outer surface-from fracturing while bending. In order to obviate any contraction of the inner surface of said chain in bending, a channel is made in the same, longitudinally and centrally, as shown at b c, fig. 3, to a depth approximate to the plane of the rivets, connecting said chain. For economy and convenience in constructing said chain, I propose to make the same by casting the section a a a a, as described, and thus obtain a much cheaper device than can be made in any other manner. D represents the former on which the timber is bent. Said former is connected with lever C, during the operation of bending, in a temporary manner, being held at one end by plateE, the latter having a projecting edge notched to receive the former, D, and-hold the same laterally, as seen in iig.4 1. rlhe lower end of lever C is attached to a bifprcated socket, under which end and between which bifurcates FY the lower end of former, D, terminates in proximity to the pivotcd head-block`G. The said lower end of former, D, is provided with a solid ring or stirrup, as shown in tig. 4. The aforesaid pivoted head-block Gis situated in the box-termination, g, of the chain. Sections h of said chain uremortised to .receive the bifurcates F, into which the latter are secured The operation of bending-is as follows :l4 The lever C is raised, as shown in iig. 2,'and theA timber, after being properly steamed, is placed inthe channel of the compound chain, with one end inserted between the bifurcates F, through the stirrup or ring on the end of formexjD, and resting against the`pivoted head-block G.

The opposite end of t l1e timber is secured to the bench bythe thumb-screw J. The mort-ises insections h ont' the chain into which bit`uicates F are secured are greater in length than the corresponding width of said bifurcates, thus allowing the lever C an independent action in the direction lshown by dotted lines C', the aforesaid independent action being sufficient to allow the ring or stirrup on former, D to, clamp the end ofthe timber B, by a. twisting grasp, and thus, before the operation of bending commences, prevents the said former from slipping ofi' or loosing the grasp on'the timber during the operation of bending. This arrangement of a. rigid ring or stirrup on the end of the'former also greatly facilitates'the operation of bending, byobviating 'the useV of i inconvenient adjustable devices for that purpose. The pvoted head-block G adapts itself to any peculiarity of Vshape on the end of the timber, and also thus prevents fraeturing said timber by the equalized division of its'V pressure during the operation of bending.

In fig. 1, the devices are shown in the position occupied immediately after the operation of bending begins.

To complete the operation the lever C is brought-down* to a position parallel to bench A, when a clamp, H, as shown .in iig. 4f,l sccuresformcr, D, to the timber, when `they maybe removed to make room for another operation of bending. For the better protection of the timber from fracturing, a met`al`strap,m m, applied to the timber, by laying the same in the channel of the chain previous to inserting the timber, and thus saidstrap jisV secured to'thc timber.

Having thus fully' described my said invention, I will proceed to setfor'tliiivhatl claim ,r and desire to` secure by Letters Patent. i

1. I claim the former.D, when provided with stirrup S, and operating substantially asset forth-, and for the purpose described.

2. I claim also the pivoted head-block G, arranged 'and operating substantially as Set forth, and for the purpose specified.

JAMES CONNER,

Witnesses:

:JOHN H; Porr, JOSEPH Runen.

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